256347850 has 24 divisors (see below), whose sum is σ = 520154208. Its totient is φ = 93217200.

The previous prime is 256347841. The next prime is 256347851. The reversal of 256347850 is 58743652.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (256347851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232494 + ... + 233593.

It is an arithmetic number, because the mean of its divisors is an integer number (21673092).

Almost surely, 2^256347850 is an apocalyptic number.

256347850 is an abundant number, since it is smaller than the sum of its proper divisors (263806358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256347850 is a wasteful number, since it uses less digits than its factorization.

256347850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466110 (or 466105 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 256347850 is about 16010.8666223912. The cubic root of 256347850 is about 635.2478830513.

The spelling of 256347850 in words is "two hundred fifty-six million, three hundred forty-seven thousand, eight hundred fifty".